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What programming practice that you once liked have you since changed your mind about? [closed]
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What about in dynamically-typed languages, such as Python or JavaScript? I still find it helpful to use Hungarian notation in these languages so that, when looking at variables, I know what type of variable to expect (if there is a type to expect - of course, it would be fool...
What rules does Pandas use to generate a view vs a copy?
...as this is faster and will always work
The chained indexing is 2 separate python operations and thus cannot be reliably intercepted by pandas (you will oftentimes get a SettingWithCopyWarning, but that is not 100% detectable either). The dev docs, which you pointed, offer a much more full explanati...
warning: incompatible implicit declaration of built-in function ‘xyz’
...in(int argc, char **argv) {
exit(1);
}
Compiled like this on Fedora 17 Linux 64 bit with gcc:
el@defiant ~/foo2 $ gcc -o n n2.c
n2.c: In function ‘main’:
n2.c:2:3: warning: incompatible implicit declaration of built-in
function...
Excluding directories in os.walk
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This is not really bad but not idiomatic Python either in my opinion.
– Torsten Bronger
Dec 16 '16 at 6:07
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How do function pointers in C work?
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@rbaleksandar Tell that to the Linux kernel developers. "always a bad idea" is strictly your opinion, with which I firmly disagree.
– Jonathon Reinhart
Apr 30 '15 at 12:31
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Formatting code snippets for blogging on Blogger [closed]
...s of code snippets then you have to do a lot of copy paste. For formatting Python code I've also used Pygments (blog post).
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How do you suppress output in IPython Notebook?
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Note this only works for Python kernels (e.g. not R).
– Max Ghenis
Feb 20 at 5:47
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Download a single folder or directory from a GitHub repo
... An example: to download the content in https://github.com/miguelgrinberg/python-socketio/tree/master/examples/wsgi, run svn export https://github.com/miguelgrinberg/python-socketio.git/trunk/examples/wsgi. A directory called wsgi will be created under the current working directory. Only source fil...
How do you get the index of the current iteration of a foreach loop?
... generate a list of integers with the same length and then zip them (as in Python's zip function).
– jpmc26
Sep 2 '17 at 1:29
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What is the best way to programmatically detect porn images? [closed]
...work for moderators but also gives you lots of free porn. It's win-win.
#!python
import os, glob
from PIL import Image
def get_skin_ratio(im):
im = im.crop((int(im.size[0]*0.2), int(im.size[1]*0.2), im.size[0]-int(im.size[0]*0.2), im.size[1]-int(im.size[1]*0.2)))
skin = sum([count for ...